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WARNING in ieee80211_link_release_channel

Status: upstream: reported on 2025/08/04 22:09
Reported-by: syzbot+47350a473be99ab8cff7@syzkaller.appspotmail.com
First crash: 300d, last: 2d11h
▶ ▼ Similar bugs (2)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in ieee80211_link_release_channel wireless -1 syz done done 3 962d 1002d 0/29 auto-obsoleted due to no activity on 2024/01/21 00:13
linux-6.1 WARNING in ieee80211_link_release_channel -1 C 111 1d06h 302d 0/3 upstream: reported C repro on 2025/08/02 09:20

Sample crash report:
bond0: (slave wlan1): Releasing backup interface
------------[ cut here ]------------
WARNING: CPU: 0 PID: 6322 at net/mac80211/chan.c:2022 ieee80211_link_release_channel+0x154/0x180 net/mac80211/chan.c:2022
Modules linked in:
CPU: 0 PID: 6322 Comm: kworker/u4:21 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Workqueue: netns cleanup_net
RIP: 0010:ieee80211_link_release_channel+0x154/0x180 net/mac80211/chan.c:2022
Code: 7c 2d 00 00 74 08 48 89 df e8 c8 8e d4 f7 bf 60 1e 00 00 48 03 3b 5b 41 5c 41 5d 41 5e 41 5f 5d e9 41 d4 85 00 e8 5c 4f 7c f7 <0f> 0b eb c5 48 c7 c1 dc 84 8b 8e 80 e1 07 80 c1 03 38 c1 0f 8c 51
RSP: 0000:ffffc9000c1f7548 EFLAGS: 00010293
RAX: ffffffff8a0adc94 RBX: ffff88805c901598 RCX: ffff888031753c00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8e8b502f R09: 1ffffffff1d16a05
R10: dffffc0000000000 R11: fffffbfff1d16a06 R12: ffff88805c902c08
R13: 1ffff1100b9202b3 R14: ffff88805c9023c0 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c44a6b3 CR3: 00000000641a3000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 unregister_netdevice_many_notify+0x133d/0x1900 net/core/dev.c:11144
 unregister_netdevice_many net/core/dev.c:11180 [inline]
 unregister_netdevice_queue+0x32c/0x370 net/core/dev.c:11060
 unregister_netdevice include/linux/netdevice.h:3137 [inline]
 _cfg80211_unregister_wdev+0x16b/0x580 net/wireless/core.c:1216
 ieee80211_remove_interfaces+0x49e/0x690 net/mac80211/iface.c:2363
 ieee80211_unregister_hw+0x5d/0x2a0 net/mac80211/main.c:1517
 mac80211_hwsim_del_radio+0x289/0x480 drivers/net/wireless/virtual/mac80211_hwsim.c:5412
 hwsim_exit_net+0x58d/0x650 drivers/net/wireless/virtual/mac80211_hwsim.c:6290
 ops_exit_list net/core/net_namespace.c:173 [inline]
 cleanup_net+0x70a/0xbb0 net/core/net_namespace.c:652
 process_one_work kernel/workqueue.c:2653 [inline]
 process_scheduled_works+0xa5d/0x15d0 kernel/workqueue.c:2730
 worker_thread+0xa55/0xfc0 kernel/workqueue.c:2811
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>

Crashes (107):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/05/29 16:19 linux-6.6.y 0a40c6fbd105 6b4a8443 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/05/28 17:16 linux-6.6.y 0a40c6fbd105 681715f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/05/28 15:53 linux-6.6.y 0a40c6fbd105 681715f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/05/27 16:46 linux-6.6.y 0a40c6fbd105 8777bdc3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/05/23 05:27 linux-6.6.y eac8889a3a1c c69befb3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/05/20 15:15 linux-6.6.y eac8889a3a1c 62fb93a2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/05/19 14:36 linux-6.6.y eac8889a3a1c 223544dc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/05/13 01:05 linux-6.6.y 3b9f64db0496 a0949470 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/05/08 12:14 linux-6.6.y 3b9f64db0496 5633175a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/05/05 14:55 linux-6.6.y 258cf62a6dfd 06e69a27 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/04/29 01:22 linux-6.6.y 142cd8382222 95008c03 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/04/28 15:02 linux-6.6.y 142cd8382222 ce741359 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/04/17 19:43 linux-6.6.y 8cee53b8eaeb 24ecfc1e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/04/16 20:53 linux-6.6.y 8cee53b8eaeb 4743f87d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/04/14 05:21 linux-6.6.y 8cee53b8eaeb 1a086e7c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/04/12 06:33 linux-6.6.y 8cee53b8eaeb 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/04/08 21:10 linux-6.6.y 80de0a958133 d9b7f621 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/03/28 16:57 linux-6.6.y c09fbcd31ae6 b5ceaad2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/03/28 05:55 linux-6.6.y c09fbcd31ae6 356bdfc9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/03/27 17:07 linux-6.6.y c09fbcd31ae6 74a13a23 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/03/26 15:57 linux-6.6.y c09fbcd31ae6 766b6434 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/03/26 06:08 linux-6.6.y c09fbcd31ae6 c6143aac .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/03/24 06:05 linux-6.6.y 4fc00fe35d46 baf8bf12 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/03/21 08:15 linux-6.6.y 4fc00fe35d46 5b92003d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/03/20 07:58 linux-6.6.y 4fc00fe35d46 2f245add .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/03/20 01:57 linux-6.6.y 4fc00fe35d46 bd6dcb30 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/03/18 01:02 linux-6.6.y 4fc00fe35d46 c8810548 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/03/17 14:26 linux-6.6.y 4fc00fe35d46 c01bca74 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/03/12 15:17 linux-6.6.y 4fc00fe35d46 4efadf07 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/03/09 21:58 linux-6.6.y 4fc00fe35d46 176bead5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/03/07 09:50 linux-6.6.y 4fc00fe35d46 5cb44a80 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/01/30 17:08 linux-6.6.y 2cf6f68313dc ae7dc18c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/01/28 21:02 linux-6.6.y cbb31f77b879 004c195c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/01/25 17:01 linux-6.6.y cbb31f77b879 40acda8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/01/25 04:36 linux-6.6.y cbb31f77b879 40acda8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/01/24 19:12 linux-6.6.y cbb31f77b879 40acda8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/01/23 18:03 linux-6.6.y cbb31f77b879 e2b1b6e6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/01/23 02:40 linux-6.6.y cbb31f77b879 82c9c083 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/01/22 13:55 linux-6.6.y cbb31f77b879 a16aed1d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/01/21 14:21 linux-6.6.y cbb31f77b879 6f1aa2f9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/01/19 18:51 linux-6.6.y cbb31f77b879 a9fc5226 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/01/18 19:24 linux-6.6.y cbb31f77b879 20d37d28 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2026/01/10 15:45 linux-6.6.y 5fa4793a2d2d d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2025/12/29 16:28 linux-6.6.y 5fa4793a2d2d d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2025/12/23 00:56 linux-6.6.y 5fa4793a2d2d d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2025/12/21 16:28 linux-6.6.y 5fa4793a2d2d d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
2025/08/04 22:08 linux-6.6.y 3a8ababb8b6a f5bcc8dc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_release_channel
* Struck through repros no longer work on HEAD.